\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Inverse Hyperbolic Since Grid table\label{ihs\_G}}
\begin{tabular}{l*{8}{c}}
\hline\hline
            &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}&\multicolumn{1}{c}{(5)}&\multicolumn{1}{c}{(6)}&\multicolumn{1}{c}{(7)}&\multicolumn{1}{c}{(8)}\\
            &\multicolumn{1}{c}{ihs\_fe2\_R}&\multicolumn{1}{c}{ihs\_fe2\_H}&\multicolumn{1}{c}{ihs\_fe2\_W10}&\multicolumn{1}{c}{ihs\_fe2\_W15}&\multicolumn{1}{c}{ihs\_fe2\_W20}&\multicolumn{1}{c}{ihs\_fe2\_O10}&\multicolumn{1}{c}{ihs\_fe2\_O15}&\multicolumn{1}{c}{ihs\_fe2\_O20}\\
\hline
ihs\_L3\_sd   &       0.281\sym{***}&       0.297\sym{***}&       0.286\sym{***}&       0.286\sym{***}&       0.285\sym{***}&       0.286\sym{***}&       0.287\sym{***}&       0.284\sym{***}\\
            &     (0.075)         &     (0.078)         &     (0.076)         &     (0.077)         &     (0.075)         &     (0.073)         &     (0.075)         &     (0.075)         \\
ihs\_R\_L3\_sd &       0.159\sym{***}&                     &                     &                     &                     &                     &                     &                     \\
            &     (0.058)         &                     &                     &                     &                     &                     &                     &                     \\
ihs\_H\_L3\_sd &                     &       0.109\sym{***}&                     &                     &                     &                     &                     &                     \\
            &                     &     (0.039)         &                     &                     &                     &                     &                     &                     \\
ihs\_W10\_L3\_sd&                     &                     &       0.119\sym{***}&                     &                     &                     &                     &                     \\
            &                     &                     &     (0.040)         &                     &                     &                     &                     &                     \\
ihs\_W15\_L3\_sd&                     &                     &                     &       0.111\sym{***}&                     &                     &                     &                     \\
            &                     &                     &                     &     (0.040)         &                     &                     &                     &                     \\
ihs\_W20\_L3\_sd&                     &                     &                     &                     &       0.138\sym{***}&                     &                     &                     \\
            &                     &                     &                     &                     &     (0.048)         &                     &                     &                     \\
ihs\_O10\_L3\_sd&                     &                     &                     &                     &                     &       0.118\sym{**} &                     &                     \\
            &                     &                     &                     &                     &                     &     (0.049)         &                     &                     \\
ihs\_O15\_L3\_sd&                     &                     &                     &                     &                     &                     &       0.104\sym{**} &                     \\
            &                     &                     &                     &                     &                     &                     &     (0.043)         &                     \\
ihs\_O20\_L3\_sd&                     &                     &                     &                     &                     &                     &                     &       0.138\sym{***}\\
            &                     &                     &                     &                     &                     &                     &                     &     (0.049)         \\
\hline
r2          &       0.887         &       0.886         &       0.886         &       0.886         &       0.887         &       0.886         &       0.885         &       0.887         \\
\hline\hline
\multicolumn{9}{l}{\footnotesize Standard errors in parentheses}\\
\multicolumn{9}{l}{\footnotesize \sym{*} \(p<0.10\), \sym{**} \(p<.05\), \sym{***} \(p<.01\)}\\
\end{tabular}
\end{table}
